19913980210 has 8 divisors (see below), whose sum is σ = 35845164396. Its totient is φ = 7965592080.

The previous prime is 19913980157. The next prime is 19913980213. The reversal of 19913980210 is 1208931991.

It can be written as a sum of positive squares in 2 ways, for example, as 17945549521 + 1968430689 = 133961^2 + 44367^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (19913980213) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 995699001 + ... + 995699020.

Almost surely, 2^19913980210 is an apocalyptic number.

19913980210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

19913980210 is a deficient number, since it is larger than the sum of its proper divisors (15931184186).

19913980210 is a wasteful number, since it uses less digits than its factorization.

19913980210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1991398028.

The product of its (nonzero) digits is 34992, while the sum is 43.

The spelling of 19913980210 in words is "nineteen billion, nine hundred thirteen million, nine hundred eighty thousand, two hundred ten".